Ref 233.
Odin, G.S., 1991 (rédacteur). Phanerozoic Time scale. Bull. Liais. Inform., IUGS Subcom. Geochronology. 9: 64 p.

Phanerozoic Time scale; BULLETIN of LIAISON and INFORMATION of the IUGS Subcommission on Geochronology (International Commission on Stratigraphy)
G.S. Odin (Chairman) H. Lippolt (Vice Chairman) A.J. Hurford (Secretary)
Volume 9 (I-1991)
Echelle des temps phanérozoïques; BULLETIN de LIAISON et INFORMATION
Sous commission de Géochronologie de l'UISG (Commission Internationale de Stratigraphie)
G.S. Odin (Président) H. Lippolt (Vice Président) A.J. Hurford (Secrétaire)

A. News from the Subcommission -- Nouvelles de la Sous-commission
A.1. Membership and activity reports

A.1.1 Subcommission members (1990-1991)

p. 2

A.1.2. Recent activity of SOG members (1989-1990)

p. 3

A.1.3. Reports on Geochronological activity… in Australia, China, Japan

p. 3

A.1.4. Past Meetings (Grenoble, Canberra, Tübingen) and Future Meetings

p. 6
A.2. Annual report of SOG to ICS and IUGS
p. 9
B. New Contributions -- Contributions nouvelles
B.1. Contributions of SOG to activities of the ICS

(Contribution de la SOG aux activités de la commission de Stratigraphie

p. 12
B.2. Time scale: recently published papers (Echelle des temps: travaux publiés)

- Echelle numérique des temps géologiques, mise à jour 1990 par G.S. Odin et C. Odin
p. 14

- L' échelle numérique des temps géologiques: élaboration, mode d'emploi par G. S Odin
p. 18

- Three dates for radiometric calibration of the Palaeogene from Syria by V.I. Vinogradov, V.A. Krasheninnikov & D.I. Golovin (summary)

p. 20
B.3. Time scale: work in progress (Echelle des temps: travaux en cours)

- Radiometric dating of Priabonian volcano-sedimentary horizons from N. Italy by Odin, G.S., Barbin, V., Hurford, A.J., Baadsgaard, H., Galbrun, B., Gillot, P.Y.

p. 21

-Première approche géochronologique de quelques roches volcaniques jurassiques du Caucase (Géorgie) par Odin, G.S., Hernandez, J., Lordkipanidze, M., Gillot, P.-Y., et Dercourt, j
p. 35

- U-Pb dating of the Devonian-Carboniferous boundary by U. Kramm

p. 45
B.4. Analytical Reference Materials (Matériaux de référence analytique)

- Preliminary calibration on BSP-1 Hornblende, a flux monitor proposed for 40Ar-39Ar dating by S. Wang, U. Cordani, K. Kawashita

p. 46

- K and 40Ar-39Ar results on the reference material BSP-1 hornblende by D.C. Rex, P. Guise and R. Green

p. 48

- MD-G and IS-G: two analytical reference materials for potassium-argon dating. by P.-Y. Gillot, B. Floris and Y. Cornette

p. 49
B.5. Reliability of geochronometers (Validité des géochronomètres)

- Accuracy and reliability of geochronometers in volcano-sedimentary Tertiary minerals by A. Montanari

p. 50
C. Information & References (1989-1990)
Isotope geology in Romania (report by M. Nicoletti, Roma)
p. 60
Analyse d'ouvrage M.A. Geyh et H. Schleicher,1990
p. 60
List of References related to the 5 Themas of interest to SOG
p. 61
Development in ESR Dating in Japan
p. 63
References to meeting presentations: Grenoble (RST), San Francisco (AGU), Dallas (GSA)
p. 64